What makes for a roadie?
A bike that fits your measurements properly, that is reasonably light, has drop bars and good quality tyres.
What makes for a good candidate for a good roadie?
Somebody who can ride a good bike properly.....I have raced on my cheaper bike against rich guys who have the best bikes, latest gear and huge egos and have soundly trounced them. I think if you are reasonably fit and used to hard exercise, have good stamina and lastly, enjoy pushing the limits, you're a good candidate.
Sorry if these are stupid questions, I don't know.